4 Jun
2007
4 Jun
'07
1:55 p.m.
At 10:42 AM 6/4/2007, you wrote:
On 4 Jun 2007 at 10:21, Grant Stockly wrote:
I'm not sure. I have a 30 year old Altair with gold plated sockets and tin
plated boards. Works fine and I don't see any oxidation. I pay about $5-7
extra per PCB to get gold plated fingers, just because people buying my kit
are most likely not buying it for what it does but more likely what it
looks like. : )
I buy the same edge card connectors that MITS
bought, minus one part
number
digit because I am buying non gold plated pins.
The contacts are gold
plated. If I buy 10 from DigiKey they are $14-$15. If I buy direct from
the company they are $17-$20. : )
I learned that the rule was "gold against gold" and "tin against tin"
for edge connectors and IC sockets. Otherwise, there would be
galvanic corrosion between the tinned and gold surfaces, particularly
in high-humidity environments.
Is this not true?